Dmitry Lychagin created ASTERIXDB-2917:
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Summary: Incorrect result with group by and cross product
Key: ASTERIXDB-2917
URL: https://issues.apache.org/jira/browse/ASTERIXDB-2917
Project: Apache AsterixDB
Issue Type: Bug
Components: COMP - Compiler
Reporter: Dmitry Lychagin
Assignee: Dmitry Lychagin
Fix For: 0.9.7
The following query returns incorrect result:
{noformat}
create dataset t1(id integer not unknown) open type primary key id;
create dataset t2(id integer not unknown) open type primary key id;
insert into t1 ([
{ "id": 1, "x": "a" },
{ "id": 2, "x": "a" },
{ "id": 3, "x": "a" },
{ "id": 4, "x": "b" },
{ "id": 5, "x": "b" },
{ "id": 6, "x": "b" }
]);
insert into t2 ([
{ "id": 11, "y": "c" },
{ "id": 12, "y": "c" }
]);
select t1.x, count(*) as cnt
from t2, t1
group by t1.x
order by t1.x;
{noformat}
Expected result:
{noformat}
{ "cnt": 6, "x": "a" }
{ "cnt": 6, "x": "b" }
{noformat}
Actual (incorrect) result
{noformat}
{ "cnt": 3, "x": "a" }
{ "cnt": 3, "x": "a" }
{ "cnt": 3, "x": "b" }
{ "cnt": 3, "x": "b" }
{noformat}
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